if Rails.env.development?
    Rails.application.assets.logger = Logger.new('/dev/null')
      Rails::Rack::Logger.class_eval do
            def call_with_quiet_assets(env)
                    previous_level = Rails.logger.level
                          Rails.logger.level = Logger::ERROR if env['PATH_INFO'] =~ %r{^/assets/}
                                call_without_quiet_assets(env)
                                    ensure
                                            Rails.logger.level = previous_level
                                                end
                alias_method_chain :call, :quiet_assets
                  end
end
